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JP4459414B2 - Oral patch preparation - Google Patents

Oral patch preparation Download PDF

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Publication number
JP4459414B2
JP4459414B2 JP2000254434A JP2000254434A JP4459414B2 JP 4459414 B2 JP4459414 B2 JP 4459414B2 JP 2000254434 A JP2000254434 A JP 2000254434A JP 2000254434 A JP2000254434 A JP 2000254434A JP 4459414 B2 JP4459414 B2 JP 4459414B2
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Prior art keywords
drug
pressure
sensitive adhesive
adhesive layer
fabric
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JP2000254434A
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Japanese (ja)
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JP2002068967A (en
Inventor
純一 齋藤
和久 二宮
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Nitto Denko Corp
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Nitto Denko Corp
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Priority to JP2000254434A priority Critical patent/JP4459414B2/en
Priority to US09/935,437 priority patent/US6387392B1/en
Priority to CA002355584A priority patent/CA2355584C/en
Priority to TW090120844A priority patent/TWI222368B/en
Priority to KR1020010051291A priority patent/KR100759656B1/en
Priority to EP01120336A priority patent/EP1181931A3/en
Publication of JP2002068967A publication Critical patent/JP2002068967A/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/70Web, sheet or filament bases ; Films; Fibres of the matrix type containing drug
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/0012Galenical forms characterised by the site of application
    • A61K9/0053Mouth and digestive tract, i.e. intraoral and peroral administration
    • A61K9/006Oral mucosa, e.g. mucoadhesive forms, sublingual droplets; Buccal patches or films; Buccal sprays
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P23/00Anaesthetics
    • A61P23/02Local anaesthetics
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2525Coating or impregnation functions biologically [e.g., insect repellent, antiseptic, insecticide, bactericide, etc.]

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Anesthesiology (AREA)
  • Physiology (AREA)
  • Nutrition Science (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Medicinal Preparation (AREA)
  • Materials For Medical Uses (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Laminated Bodies (AREA)
  • Adhesive Tapes (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、口腔内に適用され、口腔内での薬物投与を行う際に用いられる貼付製剤に関する。
【0002】
【従来の技術】
従来から、口腔内での薬物の投与用製剤としては、液剤、軟膏剤、ゼリー剤、スプレー剤、トローチ剤、バッカル錠、舌下錠等が知られている。
【0003】
【発明が解決しようとする課題】
しかしながら、これらの製剤においては、液剤はその流動、軟膏剤やゼリー剤は基剤の溶解、スプレー剤は過剰な噴霧等によって、唾液への薬物の無意味な漏出流去や不要部位への薬物の移行を避けることが困難であった。このため、患者が不必要に苦味等で不快な思いをする、薬物の利用率が低下して十分な薬効が得られない等の問題があった。
【0004】
本発明は上記課題を解決するためになされたものであり、その目的は、唾液等による薬物の漏出流去等が起こりにくく、それゆえ患者が不必要に苦味等を感じることが少なく、かつ薬物の利用効率が低下しない口腔内貼付製剤を提供することにある。
【0005】
【課題を解決するための手段】
本発明者らは、上記課題に対して鋭意検討した結果、本発明を完成するに至った。すなわち、本発明は以下の通りである。
【0006】
本発明の口腔内貼付製剤は、布帛からなる支持体と、当該支持体の片面に形成された薬物を含有する感圧性粘着剤層とを含んでなり、32℃の水中に20分間浸漬したときの、当該支持体の感圧性粘着剤層非形成面からの当該薬物の水溶出率は、当該薬物の全含有量の25重量%以下である。そのことにより、上記目的が達成される。
【0007】
好適な実施態様においては、布帛の質量は20〜150g/m2であり、かつ/または布帛の厚みは0.1〜1.0mmである。
【0008】
好適な実施態様においては、布帛は不織布であり、より好適には、不織布は、スパンレース法により製造されたものであり、かつ/またはポリオレフィン繊維を主体としてなるものである。
【0009】
また、好適な実施態様においては、薬物は局所麻酔薬である。
【0010】
【発明の実施の形態】
以下、本発明を詳細に説明する。
【0011】
本発明の口腔内貼付製剤は、布帛からなる支持体と、当該支持体の片面に形成された薬物を含有する感圧性粘着剤層とを含んでなるものである。
【0012】
本発明における支持体としては、以下の理由から、ある程度の厚みがあって扱い易く、かつ柔軟性に富んで凹凸への追従性にも優れ、実質的に口腔内での適用が可能となる布帛が選択される。その理由とは、ポリエチレンテレフタレートフィルム等の高分子フィルムは厚みが薄いために取り扱い性に劣り、さらにその剛性が高い場合には、凹凸のある口腔内の適用部位に対する追従性が不十分であるため、薬物を含有する感圧性粘着剤層が適用部位に密着せず、従って十分な薬効が期待できない場合があり、また、適用部位で著しい違和感を生じる場合もあるということである。
【0013】
布帛を構成する繊維としては特に限定されず、具体的には、ビスコースレーヨン、銅アンモニアレーヨン、ジアセテート、トリアセテート、ナイロン、ポリ塩化ビニリデン、ポリビニルアルコール、ポリ塩化ビニル、ポリエステル、ポリアクリロニトリル、ポリエチレン、ポリプロピレン、ポリウレタン、ポリアルキレンパラオキシベンゾエート、ポリクラール(塩化ビニルとポリビニルアルコールとの1:1混合物)等の1種以上から得られる合成繊維;および綿、羊毛、絹、麻等の天然繊維等が挙げられる。上記の繊維の中でも疎水性である点から、ポリエチレン、ポリプロピレン等のポリオレフィン繊維が好ましい。これらの繊維は、単独で使用しても2種以上組み合わせて使用してもよい。また、異なる二種の成分からなる分割繊維を用いてもよい。分割繊維とは、二種の成分、例えばポリプロピレンとポリエステルを口金で複合して紡糸した複合繊維を分割したものであり、この複合繊維は、一方の成分を抽出すること、あるいは強い衝撃を与えることにより、みかんを輪切りにした時に房が別れるが如く分割してより細い繊維(すなわち分割繊維)を与えることができる。
【0014】
布帛の形態としては、編布、織布、不織布等が挙げられ、経済性等の点から、不織布が好ましく、特にポリエチレン、ポリプロピレン等のポリオレフィン繊維からなる不織布が好ましい。
【0015】
不織布の製法は、特に限定されないが、メディカル製品で用いられる乾式バインダー法、サーマルボンド法、スパンボンド法、スパンレース法、エアレイプロセス法、ニードルパンチ法、TCF法、ベンリーゼ法、湿式法、メルトブローン法等があり、絡合の度合い、安全性等の点からスパンレース法で製造されたものが好ましく用いられる。スパンレース不織布は、通常スパンレース、ウォーターパンチ、ウォータージェット、ジェットボンド等で表現されるバインダーを使わずに繊維を交絡させる製造方法によって製造される。
【0016】
布帛は、JIS−L1085に規定する質量が20g/m2〜150g/m2のものが好ましく、50g/m2〜120g/m2のものがより好ましい。質量が上記範囲よりも小さい場合、概ね軟らかくなり過ぎて貼付製剤の取り扱い性が低下する傾向を示し、また、感圧性粘着剤層を構成する粘着性高分子の種類によってその程度は異なるが、薬物を含む感圧性粘着剤層が支持体から裏抜けする(支持体を構成する繊維の隙間からはみ出してくる)危険性がある。逆に上記範囲よりも大きい場合は、クッション性は大きくなるものの概ね全体的に固くなり異物感を生じやすい傾向となる。さらに、質量が上記範囲よりも小さい場合、唾液等により薬物が支持体の裏面から漏出流去する危険性が増す(すなわち、支持体の感圧性粘着剤層非形成面からの薬物の水溶出率が高くなる)。
【0017】
布帛の質量が上記範囲内でも、その繊維密度が高すぎると伸縮性が低下して、凹凸面への追従性が低下する傾向を示し、また低すぎると繊維の交絡が不十分となって、繊維の脱落が起き易くなる。布帛は、JIS−L1085に規定する厚みが0.1mm〜1.0mmであるのが好ましく、0.2mm〜0.8mmであるのがより好ましい。厚みが上記範囲よりも小さい場合、唾液等により薬物が支持体の裏面から漏出流去する危険性が増す(すなわち、支持体の感圧性粘着剤層非形成面からの薬物の水溶出率が高くなる)。
【0018】
また、布帛はそのJIS−L1085に規定する剛軟度(45°カンチレバ法による)が10mm〜80mmであるのが好ましく、30mm〜70mmであるのがより好ましい。剛軟度がこの数値範囲にあることにより、貼付製剤が好ましい剛性を有するものとなり、貼付作業時の取り扱い性及び貼付製剤の凹凸面への密着性がより一層向上する。
【0019】
上記布帛は、後述するような、本発明の口腔内貼付製剤を32℃の水中に20分間浸漬したときの、支持体の感圧性粘着剤層非形成面からの薬物の水溶出率が、薬物の全含有量の25重量%以下となるように選択される。
【0020】
感圧性粘着剤層に含有させる薬物としては、実質的に口腔内で経粘膜投与が可能なものであれば、特に限定されない。例えば、全身性薬物としては、コルチコステロイド類、鎮痛消炎剤、催眠鎮静剤、精神安定剤、抗高血圧剤、降圧利尿剤、抗生物質、全身麻酔剤、抗菌剤、抗真菌剤、ビタミン剤、冠血管拡張剤、抗ヒスタミン剤、鎮咳剤、性ホルモン、抗鬱剤、脳循環改善剤、制吐剤、抗腫瘍剤、酵素剤、生体医薬等が挙げられる。局所性薬物としては、例えば、リドカイン等の局所麻酔剤、塩酸テトラサイクリン等の歯科用抗生物質、塩化セチルピリジニウム等の殺菌消毒剤、塩酸クロルヘキシジン等の口腔内感染予防治療剤、ジメチルイソプロピルアズレン等の消炎剤、酢酸ヒドロコルチゾン等の副腎皮質ホルモン等が挙げられる。好ましくは、コカイン、プロカイン、クロロプロカイン、テトラカイン、ベンゾカイン、リドカイン、メピバカイン、プリロカイン、プピバカイン、ジブカイン、プロポキシカイン、エチドカイン、ジクロニン、オキシブプロカイン、テーカイン、アメトカイン、プロピトカイン、ピペロカイン、カタカイン、ブタニカイン、ヘキソチオカイン、メプリルカイン、エピロカイン、アミロカイン、イソブカイン、トリカイン、パレトキシカイン、ピロカイン、ヘキシルカイン、メタブトキシカイン、キシロカイン、メタブテタミン、オキセサゼイン、ピリドキシン、ブロモキシン、ジメチソキン、アミノ安息香酸エチル、ピペリジノアセチルアミノ安息香酸エチル、ベンジルアルコール、クロロブタノールおよびこれらの薬理学的に許容される塩からなる群より選択される少なくとも1種の局所麻酔薬が用いられ、より好ましくは、リドカイン、塩酸リドカイン、塩酸プロカイン、塩酸メピバカイン、塩酸ジブカイン、塩酸プピバカイン、塩酸プロピトカイン、塩酸テトラカイン、塩酸トリカインが用いられる。
【0021】
感圧性粘着剤層中のこれらの薬物の含有量は、薬物の種類、投与目的などに応じて適宜設定することができるが、通常、1〜80重量%、好ましくは2〜70重量%程度である。含有量が1重量%未満の場合、治療や予防に有効な量の薬物放出が期待できず、また、80重量%を超えると、接着性が低下して十分に貼着しなくなるために治療や予防効果に限界が生じると共に経済的にも不利である。
【0022】
薬物は、その薬効(使用用途)に応じて、感圧性粘着剤層に溶解状態、過飽和結晶析出状態もしくは分散状態にて含有させる。これにより、各種疾患の治療及び/または予防を目的とした口腔内貼付製剤とすることができる。
【0023】
感圧性粘着剤層は、実質的に口腔内粘膜に貼付可能なものであれば特に限定されず、常温で感圧粘着性を有するあらゆる高分子を基剤とする粘着剤等を用いて形成されるが、実質的に水に溶解しないか若しくは実質的に水を吸収しない感圧性粘着剤層が好ましい。本発明において、「実質的に水に溶解しないか若しくは実質的に水を吸収しない感圧性粘着剤層」とは、20℃での十分量の水に対する溶解量が5重量%以下で、かつ常温で感圧接着性を示す粘着性高分子、および/または、20℃での十分量の水に対する吸収量が5重量%以下で、かつ常温で感圧接着性を示す粘着性高分子、を主体として形成された感圧性粘着剤層を意味する。このような実質的に水に溶解しないか若しくは実質的に水を吸収しない感圧性粘着剤層に用いられる粘着剤としては、例えば、アクリル系粘着剤;スチレン−イソプレン−スチレンブロック共重合体、スチレン−ブタジエン−スチレンブロック共重合体、ポリイソプレン、ポリイソブチレン、ポリブタジエンなどのゴム系粘着剤;シリコーンゴム、ジメチルシロキサンベース、ジフェニルシロキサンベースなどのシリコーン系粘着剤;ポリビニルメチルエーテル、ポリビニルエチルエーテル、ポリビニルイソブチルエーテルなどのビニルエーテル系粘着剤;酢酸ビニル−エチレン共重合体などのビニルエステル系粘着剤;ジメチルテレフタレート、ジメチルイソフタレート、ジメチルフタレートなどのカルボン酸成分とエチレングリコールなどの多価アルコール成分とからなるポリエステル系粘着剤等が挙げられる。中でも、布帛との投錨性、粘膜貼着性、薬物溶解性、薬物安定性などの点から、アクリル系粘着剤が好ましい。
【0024】
上記アクリル系粘着剤とは、(メタ)アクリル酸アルキルエステルを主成分として、これに官能性単量体を共重合して得られる粘着剤である。(メタ)アクリル酸アルキルエステルとしては、具体的には、そのアルキル基がブチル、ペンチル、へキシル、ヘプチル、オクチル、2−エチルヘキシル、ノニル、デシル、ウンデシル、ドデシル、トリデシルなどの炭素数4〜13の直鎖アルキル基や分岐アルキル基である(メタ)アクリル酸アルキルエステルであり、これらは一種もしくは二種以上用いることができる。
【0025】
上記(メタ)アクリル酸アルキルエステルと共重合させる官能性単量体としては、共重合反応に関与する不飽和二重結合を分子内に少なくとも一個有するとともに、官能基を側鎖に有するものが使用できる。かかる官能性単量体としては、(メタ)アクリル酸、イタコン酸、マレイン酸、無水マレイン酸などのカルボキシル基含有単量体;(メタ)アクリル酸ヒドロキシエチルエステル、(メタ)アクリル酸ヒドロキシプロピルエステルなどのヒドロキシル基含有単量体;スチレンスルホン酸、アリルスルホン酸、スルホプロピル(メタ)アクリレート、(メタ)アクリロイルオキシナフタレンスルホン酸、アクリルアミドメチルプロパンスルホン酸などのスルホ基含有単量体;(メタ)アクリル酸アミノエチルエステル、(メタ)アクリル酸ジメチルアミノエチルエステル、(メタ)アクリル酸tert−ブチルアミノエチルエステルなどのアミノ基含有単量体;(メタ)アクリルアミド、ジメチル(メタ)アクリルアミド、N−メチロール(メタ)アクリルアミド、N−メチロールプロパン(メタ)アクリルアミド、N−ビニルアセトアミドなどのアミド基含有単量体;(メタ)アクリル酸メトキシエチルエステル、(メタ)アクリル酸エトキシエチルエステル、(メタ)アクリル酸メトキシエチレングリコールエステル、(メタ)アクリル酸メトキシジエチレングリコールエステル、(メタ)アクリル酸メトキシポリエチレングリコールエステル、(メタ)アクリル酸メトキシポリプロピレングリコールエステル、(メタ)アクリル酸テトラヒドロフリルエステルなどのアルコキシル基含有単量体等が挙げられる。また、これら以外に共重合できる単量体としては、例えば、(メタ)アクリロニトリル、酢酸ビニル、プロピオン酸ビニル、N−ビニル−2−ピロリドン、メチルビニルピロリドン、ビニルピリジン、ビニルピペリドン、ビニルピリミジン、ビニルピペラジン、ビニルピロール、ビニルイミダゾール、ビニルカプロラクタム、ビニルオキサゾール、ビニルモルホリンなどが挙げられる。
【0026】
また、本発明の特性を変化させない範囲であれば、炭素数1〜3或は炭素数14以上のアルキル基を有する(メタ)アクリル酸アルキルエステルを共重合してもよい。
【0027】
本発明においては、アクリル系粘着剤としては、粘着特性としての感圧粘着性や凝集性、感圧性粘着剤層中に含有する薬物の放出性などに特に優れる点から、(メタ)アクリル酸アルキルエステルと(メタ)アクリル酸との共重合体、特に(メタ)アクリル酸アルキルエステル65〜99重量%と(メタ)アクリル酸1〜35重量%とを重合して得られる共重合体が好ましい。
【0028】
本発明において、感圧性粘着剤層を構成する粘着性高分子(粘着剤)は、薬物の投与目的に応じて選定される。すなわち、短時間投与を目的とする場合は、含有する薬物の放出性に優れる粘着性高分子を選定し、長時間投与を目的とする場合は、含有する薬物に対して、比較的徐放性に富む粘着性高分子を選定することが望ましい。
【0029】
上記感圧性粘着剤層には、必要に応じて、種々の添加剤を含有させてもよい。添加剤としては、可塑剤、吸収促進剤、酸化防止剤、粘着性付与剤、充填剤などが挙げられる。可塑剤は、感圧性粘着剤層を可塑化することによって、口腔粘膜に対する貼着力を調整することができる。このような可塑剤としては、例えば、流動パラフィンなどの炭化水素類、ジイソプロピルアジペート、ジアセチルセパゲートなどが挙げられ、これらは1種または2種以上が使用される。吸収促進剤とは、感圧性粘着剤層内での薬物の溶解性および拡散性を高める機能を有する化合物であり、例えば、主に薬物の溶解性を高める化合物として、エチレングリコール、ジエチレングリコール、プロピレングリコール、トリエチレングリコール、ポリエチレングリコール、ポリプロピレングリコールなどのグリコール類など、主に薬物の拡散性を高める化合物として、オリーブ油、ヒマシ油、スクアラン、ラノリンなどの油脂類などが挙げられる。酸化防止剤としては、アスコルビン酸、酢酸トコフェロール、ブチルヒドロキシアニソール、ジブチルヒドロキシトルエン、没食子酸プロピル、2−メルカプトベンズイミダゾールなどが挙げられる。粘着性付与剤としては、ロジン、変性ロジン、石油系樹脂、ポリテルペン樹脂、ポリスチレン樹脂、ポリブテン樹脂、液状ポリイソブチレンなどが挙げられる。充填剤としては、カオリン、酸化チタン、タルク、炭酸カルシウム、炭酸マグネシウム、珪酸塩、珪酸、メタ珪酸アルミン酸マグネシウム、アルミニウム水和物、硫酸バリウム、硫酸カルシウムなどが挙げられる。その他の添加剤としては、各種界面活性剤、エトキシ化ステアリルアルコール、オレイン酸モノグリセリド、カプリル酸モノグリセリド、ラウリル酸モノグリセリドなどのグリセリンモノエステル類、あるいはグリセリンジエステル、グリセリントリエステルまたはそれらの混合物、ラウリル酸エチル、ミリスチン酸イソプロピル、ミリスチン酸イソトリデシル、パルミチン酸オクチル、パルミチン酸イソプロピル、オレイン酸エチル、アジピン酸ジイソプロピルなどの高級脂肪酸エステル、オレイン酸、カプリル酸などの高級脂肪酸、N−メチルピロリドン、1,3−ブタンジオールなどが挙げられる。
【0030】
本発明の口腔内貼付製剤の製造方法は特に限定されない。例えば、薬物、粘着性高分子等を溶媒に溶解または分散させ、得られた溶液または分散液を支持体の片面に塗布し、乾燥して感圧性粘着剤層を支持体の片面に形成する方法などが挙げられる。また、上記の溶液または分散液を保護用の離型ライナー上に塗布し、乾燥して離型ライナー上に感圧性粘着剤層を形成し、この離型ライナー上の感圧性粘着剤層と支持体とを貼り合わせる方法によって製造することができる。この場合、製造時、運搬時または保存時に、感圧性粘着剤層が、予期せず、器具、容器などに接触して接着してしまうことを防止できる。また、口腔内の粘膜に貼付を行う直前まで、感圧性粘着剤層の露出面を離型ライナーで被覆保護し、口腔内の粘膜への貼付時に離型ライナーを剥離して感圧性粘着剤層を露出し、貼付を行うことができるので、感圧性粘着剤層の接着性及び薬物の劣化を防止できる。
【0031】
離型ライナーとしては、使用時に感圧性粘着剤層から容易に剥離されるものであれば、その材質は特に限定されない。例えば、感圧性粘着剤層と接触する面にシリコーン樹脂、フッ素樹脂などを塗布することによって剥離処理が施された、ポリエステル、ポリ塩化ビニル、ポリ塩化ビニリデン、ポリエチレンテレフタレートなどの合成樹脂フィルム、上質紙、グラシン紙などの紙、あるいは上質紙またはグラシン紙等とポリオレフィンフィルムとのラミネートフィルム等、が用いられる。該離型ライナーの厚みは、通常10〜200μm、好ましくは50〜100μmである。
【0032】
感圧性粘着剤層の厚みは、通常、10μm〜200μm、好ましくは15μm〜150μmである。
【0033】
本発明の口腔内貼付製剤の形状は、実質的に貼付が可能な形状であればよく、特に制限は無いが、例えば、円形、楕円形、長方形、正方形、三角形、亀甲形等が挙げられ、特に、製造上および使用上の利点から、楕円形、長方形または正方形が好ましい。その大きさは口腔内での貼付に適した大きさであり、例えば、楕円形の場合、一般に短径が0.5cm〜2cm、長径が1cm〜5cm、好ましくは、短径が0.8cm〜1.5cm、長径が2cm〜4cmである。長方形の場合、一般に短辺が0.5cm〜2cm、長辺が1cm〜5cm、好ましくは、短辺が0.8cm〜1.5cm、長辺が2cm〜4cmである。また、正方形の場合、一般に一辺が0.5cm〜2cm、好ましくは0.8cm〜1.5cmである。
【0034】
本発明の口腔内貼付製剤は、32℃の水中に20分間浸漬したときの、支持体の感圧性粘着剤層非形成面からの薬物の水溶出率が、薬物の全含有量の25重量%以下、好ましくは10重量%以下である。薬物の水溶出率が25重量%を超えると、唾液等による薬物の漏出流去が起こり易くなるため、患者が不必要に苦味等で不快な思いをすること、薬物の利用効率が低下して十分な薬効が得られないこと等の問題がある。本発明において、「支持体の感圧性粘着剤層非形成面」とは、支持体の感圧性粘着剤層形成面と反対の面および支持体の側面をいう。なお、上記水溶出率は、日本薬局方記載の溶出試験法(パドル法)に準じて測定される値である。
【0035】
薬物の水溶出率を上記範囲とするには、例えば、布帛の形態(例えば、不織布)、材質(例えば、ポリオレフィン)、厚み、質量、粘着剤の種類(例えば、アクリル系粘着剤)、感圧性粘着剤層の厚み等を適宜選択する等の方法が採用される。
【0036】
本発明の口腔内貼付製剤は、取り扱い性と使用感のバランスの点から、JIS−L1085に規定する剛軟度(45°カンチレバ法による)が15mm〜60mmであることが好ましく、20mm〜50mmであることがより好ましい。剛軟度が、この範囲を外れて小さい場合、取り扱い性が低下する傾向を示し、例えば、歯部、舌部等により複雑で狭隘な空間配置を呈している口腔内での貼付操作がしずらくなる場合があり、この範囲を外れて大きい場合、貼付時の異物感を感じやすい傾向となる。
【0037】
本発明の口腔内貼付製剤を局所性薬物を含む口腔内貼付製剤とした場合、主として歯肉部に貼付され、直ちに薬効が発現する。本発明の口腔内貼付製剤を全身性薬物を含む口腔内貼付製剤とした場合、頬粘膜、唇内側粘膜、舌下、歯肉部等に貼付され、数十分から数時間程度、薬効が持続する。さらに本発明の全身性薬物を含む口腔内貼付製剤を上唇内側粘膜又は上顎歯肉部外側に貼付すれば、唾液との接触が少なく、唇と歯茎とで押さえられるために剥離しにくく、より長時間、薬効が持続する。
【0038】
【実施例】
以下、本発明を実施例により具体的に説明するが、本発明はこれらの実施例に限定されない。なお、以下の記載において、部は重量部を意味し、不織布の厚みおよび質量は、JIS−L1085に規定する方法で測定した値である。
【0039】
(粘着剤A溶液の調製)
不活性ガス雰囲気下で、アクリル酸2−エチルヘキシルエステル95部及びアクリル酸5部とを酢酸エチル中で共重合させて、粘着剤A溶液を調製した。
【0040】
(実施例1)
粘着剤A溶液40部(固形分)にリドカイン60部を加えて混合溶解し、得られた溶液を剥離処理したポリエステルフィルム(厚み75μm)上に乾燥後の厚みが約20μmとなるように塗布、乾燥して感圧性粘着剤層を作製した。次いで、この感圧性粘着剤層を、スパンレース法により作製した伸縮性ポリプロピレン製不織布(厚み0.6mm、質量100g/m2)に貼り合わせて口腔内貼付製剤を作製した。
【0041】
(実施例2)
粘着剤A溶液40部(固形分)にリドカイン60部を加えて混合溶解し、得られた溶液を剥離処理したポリエステルフィルム(厚み75μm)上に乾燥後の厚みが約20μmとなるように塗布、乾燥して感圧性粘着剤層を作製した。次いで、この感圧性粘着剤層を、複合繊維(ポリプロピレン含量:55重量%、ポリエステル含量:45重量%)を分割して得られた分割繊維をスパンレース法により絡合させて作製した分割繊維製不織布(厚み0.42mm、質量90g/m2)に貼り合わせて口腔内貼付製剤を作製した。
【0042】
(比較例1)
粘着剤A溶液40部(固形分)にリドカイン60部を加えて混合溶解し、得られた溶液を剥離処理したポリエステルフィルム(厚み75μm)上に乾燥後の厚みが約20μmとなるように塗布、乾燥して感圧性粘着剤層を作製した。次いで、この感圧性粘着剤層を、スパンレース法により作製した伸縮性ポリエステル製不織布(厚み約0.6mm、質量100g/m2)に貼り合わせて口腔内貼付製剤を作製した。
【0043】
(比較例2)
粘着剤A溶液40部(固形分)にリドカイン60部を加えて混合溶解し、得られた溶液を剥離処理したポリエステルフィルム(厚み75μm)上に乾燥後の厚みが約20μmとなるように塗布、乾燥して感圧性粘着剤層を作製した。次いで、この感圧性粘着剤層を、ポリエステル製不織布(厚み0.035mm、質量12g/m2)に貼り合わせて口腔内貼付製剤を作製した。
【0044】
(比較例3)
粘着剤A溶液40部(固形分)にリドカイン60部を加えて混合溶解し、得られた溶液を剥離処理したポリエステルフィルム(厚み75μm)上に乾燥後の厚みが約20μmとなるように塗布、乾燥して感圧性粘着剤層を作製した。次いで、この感圧性粘着剤層を、ポリプロピレン製不織布(厚み0.2mm、質量18g/m2)に貼り合わせて口腔内貼付製剤を作製した。
【0045】
上記実施例1、2および比較例1、2、3で得られた口腔内貼付製剤について、1cm2(1cm×1cm)のサイズに切断した試験片を用いて下記(1)および(2)の性能評価を行った。その結果を表1および2に示す。
【0046】
(1)薬物の水溶出率
上記製剤について、日本薬局方記載の溶出試験法(パドル法)に準じて、薬物の水溶出率を測定した。まず、溶出試験器(NTR−VS6P;富山産業社製)に容器(図1参照)をセットした後、この容器に溶出液として水500mLを入れた。次いで、溶出試験器を32℃に設定し、恒温化させた後、ポリエステルフィルムを剥した試験片を、直径41.2mm、厚さ3.3mmのステンレス鋼板上の中心に、薬物を含有する感圧性粘着剤層を下に向けて両面テープ(No.500;日東電工社製)で固定して、容器中の水中に浸漬した。次に、パドル(図2参照)を容器中に配置し、25回転/分で回転させて溶出液を攪拌し、20分経過後に、容器から溶出液5mLを採取した。採取した溶出液中の薬物の溶出量を、液体クロマトグラフィーで測定し、初期薬物含有量に対する溶出率を算出した。
【0047】
【表1】

Figure 0004459414
【0048】
(2)唾液による薬物の漏出流去
ポリエステルフィルムを剥した試験片を、5人のボランティアの予め脱脂綿で軽く水分を拭き取った上顎歯肉部内側に貼付け、使用時の苦味および薬理効果に関して下記の要領で点数評価した。
【0049】
(使用時の苦味)
貼付後30秒毎に3分まで、唾液で先端が濡れた舌先で製剤の試験片の支持体を舐め、薬物による苦味について下記の点数段階で評価した。
0点:貼付1分以内に苦味を感じた
1点:貼付1分後から3分以内に苦味を感じた
2点:貼付3分後でも苦味を感じなかった。
【0050】
(薬理効果)
製剤の試験片を貼付3分後に剥離し、貼付部位を注射針で刺激し、その麻酔効果について下記の点数段階で評価した。
0点:痛みを感じた
1点:僅かに痛みを感じた
2点:痛みを感じなかった。
【0051】
【表2】
Figure 0004459414
【0052】
表1および2から、実施例1および2の製剤は、薬物の水溶出率が低く、そのため、唾液による薬物の漏出流去がほとんどなく、よって苦味を感じることも少なく、薬理効果も十分であったことが分かる。一方、比較例1の製剤は不織布がポリエステル製であったため、比較例2の製剤は不織布の厚みと質量が小さかったため、また比較例3の製剤は不織布の質量が小さかったため、薬物の水溶出率が高く、それゆえ唾液により薬物が漏出流去し、よって苦味を感じ、薬理効果も十分でなかった。
【0053】
【発明の効果】
本発明によれば、布帛からなる支持体と、当該支持体の片面に形成された薬物を含有する感圧性粘着剤層とを含んでなる口腔内貼付製剤を得ることができる。本発明の口腔内貼付製剤は、32℃の水中に20分間浸漬したときの、当該支持体の他方の面および側面からの当該薬物の水溶出率が、当該薬物の全含有量の25重量%以下であるため、唾液等による薬物の漏出流去が起こりにくく、それゆえ患者が不必要に苦味等を感じることが少なく、かつ薬物の利用効率が低下しない。
【図面の簡単な説明】
【図1】本発明における薬物の水溶出率の測定に用いられる容器の断面図である。
【図2】本発明における薬物の水溶出率の測定に用いられるパドルを示す図であり、(a)は正面図であり、(b)は側面図である。
【符号の説明】
1 容器
2 パドル
3 回転軸
4 攪拌翼[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a patch preparation that is applied to the oral cavity and used when administering a drug in the oral cavity.
[0002]
[Prior art]
Conventionally, liquid preparations, ointments, jelly preparations, sprays, lozenges, buccal tablets, sublingual tablets and the like are known as preparations for administration of drugs in the oral cavity.
[0003]
[Problems to be solved by the invention]
However, in these preparations, fluids flow, ointments and jellies dissolve the base, sprays spray excessively, etc., meaningless leakage of the drug into saliva and drugs to unnecessary sites. It was difficult to avoid the transition. For this reason, there are problems such that the patient feels uncomfortable due to an unpleasant bitter taste or the like, or the drug utilization rate is reduced and sufficient medicinal effects cannot be obtained.
[0004]
The present invention has been made in order to solve the above-mentioned problems, and the object thereof is to prevent the leakage of the drug due to saliva and the like, so that the patient rarely feels an unpleasant bitterness and the like, and the drug An object of the present invention is to provide an intraoral patch preparation that does not reduce the use efficiency.
[0005]
[Means for Solving the Problems]
As a result of intensive studies on the above problems, the present inventors have completed the present invention. That is, the present invention is as follows.
[0006]
The intraoral patch preparation of the present invention comprises a support composed of a fabric and a pressure-sensitive adhesive layer containing a drug formed on one side of the support, and is immersed in water at 32 ° C. for 20 minutes. The water elution rate of the drug from the pressure-sensitive adhesive layer non-forming surface of the support is 25% by weight or less of the total content of the drug. This achieves the above object.
[0007]
In a preferred embodiment, the fabric has a mass of 20 to 150 g / m. 2 And / or the thickness of the fabric is 0.1 to 1.0 mm.
[0008]
In a preferred embodiment, the fabric is a non-woven fabric, and more preferably, the non-woven fabric is manufactured by a spunlace method and / or is mainly composed of polyolefin fibers.
[0009]
In a preferred embodiment, the drug is a local anesthetic.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail.
[0011]
The intraoral patch preparation of the present invention comprises a support made of a fabric and a pressure-sensitive adhesive layer containing a drug formed on one side of the support.
[0012]
The support in the present invention has a certain thickness and is easy to handle for the following reasons, and is flexible and excellent in conformity to irregularities, and can be applied in the oral cavity substantially. Is selected. The reason for this is that polymer films such as polyethylene terephthalate film are thin and therefore have poor handleability, and if the rigidity is high, followability to uneven application sites in the oral cavity is insufficient. In other words, the pressure-sensitive adhesive layer containing the drug does not adhere to the application site, and therefore sufficient drug efficacy may not be expected, and there may be a significant sense of discomfort at the application site.
[0013]
The fiber constituting the fabric is not particularly limited, and specifically, viscose rayon, copper ammonia rayon, diacetate, triacetate, nylon, polyvinylidene chloride, polyvinyl alcohol, polyvinyl chloride, polyester, polyacrylonitrile, polyethylene, Synthetic fibers obtained from one or more of polypropylene, polyurethane, polyalkylene paraoxybenzoate, polyclar (a 1: 1 mixture of vinyl chloride and polyvinyl alcohol), and natural fibers such as cotton, wool, silk, hemp, etc. . Among the above fibers, polyolefin fibers such as polyethylene and polypropylene are preferable because they are hydrophobic. These fibers may be used alone or in combination of two or more. Moreover, you may use the split fiber which consists of two different types of components. A split fiber is a split of a composite fiber that is spun by combining two components, for example, polypropylene and polyester with a base, and this composite fiber extracts one component or gives a strong impact. Thus, when the mandarin orange is cut into pieces, it can be divided so that the tufts are separated to give finer fibers (that is, divided fibers).
[0014]
Examples of the form of the fabric include a knitted fabric, a woven fabric, a non-woven fabric, and the like. From the viewpoint of economy and the like, a non-woven fabric is preferable, and a non-woven fabric made of polyolefin fibers such as polyethylene and polypropylene is particularly preferable.
[0015]
The production method of the nonwoven fabric is not particularly limited, but is a dry binder method, thermal bond method, spun bond method, spun lace method, air lay process method, needle punch method, TCF method, Benize method, wet method, melt blown used in medical products. Among them, those manufactured by the spunlace method are preferably used from the viewpoints of the degree of entanglement and safety. A spunlace nonwoven fabric is usually produced by a production method in which fibers are entangled without using a binder expressed by spunlace, water punch, water jet, jet bond or the like.
[0016]
The fabric has a mass specified in JIS-L1085 of 20 g / m. 2 ~ 150g / m 2 Preferably 50 g / m 2 ~ 120g / m 2 Are more preferred. When the mass is smaller than the above range, it tends to be too soft and the handleability of the patch preparation tends to decrease, and the degree varies depending on the type of adhesive polymer constituting the pressure-sensitive adhesive layer. There is a risk that the pressure-sensitive adhesive layer containing spills through the support (extrudes from the gaps between the fibers constituting the support). On the other hand, when it is larger than the above range, the cushioning property is increased, but generally it becomes hard as a whole and tends to cause a foreign object feeling. Furthermore, when the mass is smaller than the above range, there is an increased risk of the drug leaking out from the back surface of the support due to saliva or the like (that is, the water elution rate of the drug from the surface where the pressure-sensitive adhesive layer is not formed on the support) Becomes higher).
[0017]
Even if the mass of the fabric is within the above range, if the fiber density is too high, the stretchability is lowered and the followability to the uneven surface tends to be lowered, and if too low, the fiber entanglement becomes insufficient, It becomes easy for fibers to fall off. The fabric preferably has a thickness specified in JIS-L1085 of 0.1 mm to 1.0 mm, and more preferably 0.2 mm to 0.8 mm. When the thickness is smaller than the above range, there is an increased risk of the drug leaking out from the back surface of the support due to saliva or the like (that is, the drug has a high water elution rate from the surface where the pressure-sensitive adhesive layer is not formed). Become).
[0018]
Further, the fabric preferably has a bending resistance (as determined by the 45 ° cantilever method) defined in JIS-L1085 of 10 mm to 80 mm, and more preferably 30 mm to 70 mm. When the bending resistance is in this numerical range, the patch preparation has preferable rigidity, and the handleability during the sticking operation and the adhesion to the uneven surface of the patch preparation are further improved.
[0019]
The above-mentioned fabric has a drug water elution rate from the surface where the pressure-sensitive adhesive layer is not formed when the intraoral patch preparation of the present invention as described later is immersed in water at 32 ° C. for 20 minutes. Is selected to be 25% by weight or less of the total content.
[0020]
The drug contained in the pressure-sensitive adhesive layer is not particularly limited as long as it can be administered transmucosally in the oral cavity. For example, systemic drugs include corticosteroids, analgesic anti-inflammatory agents, hypnotic sedatives, tranquilizers, antihypertensive agents, antihypertensive diuretics, antibiotics, general anesthetics, antibacterial agents, antifungal agents, vitamins, Examples include coronary vasodilators, antihistamines, antitussives, sex hormones, antidepressants, cerebral circulation improving agents, antiemetics, antitumor agents, enzyme agents, biopharmaceuticals and the like. Examples of local drugs include local anesthetics such as lidocaine, dental antibiotics such as tetracycline hydrochloride, bactericidal antiseptics such as cetylpyridinium chloride, oral infection preventive and therapeutic agents such as chlorhexidine hydrochloride, and anti-inflammatory drugs such as dimethylisopropylazulene Agents, corticosteroids such as hydrocortisone acetate, and the like. Preferably, cocaine, procaine, chloroprocaine, tetracaine, benzocaine, lidocaine, mepivacaine, prilocaine, pupivacaine, dibucaine, propoxycaine, etidocaine, diclonin, oxybuprocaine, tecaine, amethocaine, propitocaine thiocaine, piperokine thiocaine, cataqua, Meprilucaine, Epirocaine, Amilocaine, Isobucaine, Tricaine, Paletoxycaine, Pilocaine, Hexylcaine, Metabutoxycaine, Xylocaine, Metabutetamine, Oxesasein, Pyridoxine, Bromoxine, Dimethisoquine, Ethyl aminobenzoate, Piperidinoacetylbenzyl alcohol Chlorobutanol and their pharmacologically acceptable At least one local anesthetic selected from the group consisting of: Lidocaine, lidocaine hydrochloride, procaine hydrochloride, mepivacaine hydrochloride, dibucaine hydrochloride, pupivacaine hydrochloride, propitocaine hydrochloride, tetracaine hydrochloride, tricaine hydrochloride is used. It is done.
[0021]
The content of these drugs in the pressure-sensitive adhesive layer can be appropriately set according to the type of drug, the purpose of administration, etc., but is usually 1 to 80% by weight, preferably about 2 to 70% by weight. is there. When the content is less than 1% by weight, it is not possible to expect the release of a drug effective for treatment or prevention. When the content exceeds 80% by weight, the adhesiveness is lowered and the adhesive cannot be sufficiently adhered. The preventive effect is limited and it is economically disadvantageous.
[0022]
The drug is contained in the pressure-sensitive pressure-sensitive adhesive layer in a dissolved state, a supersaturated crystal precipitation state or a dispersed state depending on its medicinal effect (use application). Thereby, it can be set as the intraoral patch preparation for the purpose of the treatment and / or prevention of various diseases.
[0023]
The pressure-sensitive adhesive layer is not particularly limited as long as it can be applied to the oral mucosa. The pressure-sensitive adhesive layer is formed using an adhesive based on any polymer having pressure-sensitive adhesive properties at room temperature. However, a pressure-sensitive adhesive layer that does not substantially dissolve in water or does not substantially absorb water is preferable. In the present invention, “a pressure-sensitive adhesive layer that does not substantially dissolve in water or does not absorb water” means that the amount dissolved in a sufficient amount of water at 20 ° C. is 5% by weight or less, and Mainly a pressure-sensitive adhesive polymer exhibiting pressure-sensitive adhesiveness and / or a pressure-sensitive polymer that absorbs a sufficient amount of water at 20 ° C. at 5% by weight or less and exhibits pressure-sensitive adhesive property at room temperature The pressure-sensitive adhesive layer formed as follows. Examples of the pressure-sensitive adhesive used for such a pressure-sensitive pressure-sensitive adhesive layer that does not substantially dissolve in water or absorbs water include acrylic pressure-sensitive adhesives; styrene-isoprene-styrene block copolymers, and styrene. -Rubber adhesive such as butadiene-styrene block copolymer, polyisoprene, polyisobutylene, polybutadiene; silicone adhesive such as silicone rubber, dimethylsiloxane base, diphenylsiloxane base; polyvinyl methyl ether, polyvinyl ethyl ether, polyvinyl isobutyl Vinyl ether adhesives such as ethers; Vinyl ester adhesives such as vinyl acetate-ethylene copolymers; Carboxylic acid components such as dimethyl terephthalate, dimethyl isophthalate, dimethyl phthalate, and ethylene glycol. It includes polyvalent polyester pressure-sensitive adhesive consisting of an alcohol component or the like is. Among these, an acrylic pressure-sensitive adhesive is preferable from the viewpoints of anchoring property with a fabric, mucosal adhesion, drug solubility, drug stability, and the like.
[0024]
The acrylic pressure-sensitive adhesive is a pressure-sensitive adhesive obtained by copolymerizing a (meth) acrylic acid alkyl ester as a main component and a functional monomer. Specifically, as the (meth) acrylic acid alkyl ester, the alkyl group has 4 to 13 carbon atoms such as butyl, pentyl, hexyl, heptyl, octyl, 2-ethylhexyl, nonyl, decyl, undecyl, dodecyl, tridecyl and the like. (Meth) acrylic acid alkyl ester which is a linear alkyl group or a branched alkyl group, and these may be used alone or in combination.
[0025]
As the functional monomer to be copolymerized with the above (meth) acrylic acid alkyl ester, one having at least one unsaturated double bond involved in the copolymerization reaction in the molecule and having a functional group in the side chain is used. it can. Such functional monomers include: (meth) acrylic acid, itaconic acid, maleic acid, maleic anhydride and other carboxyl group-containing monomers; (meth) acrylic acid hydroxyethyl ester, (meth) acrylic acid hydroxypropyl ester Hydroxyl group-containing monomers such as styrene sulfonic acid, allyl sulfonic acid, sulfopropyl (meth) acrylate, (meth) acryloyloxynaphthalene sulfonic acid, acrylamidomethylpropane sulfonic acid and the like; (meth) Amino group-containing monomers such as acrylic acid aminoethyl ester, (meth) acrylic acid dimethylaminoethyl ester, (meth) acrylic acid tert-butylaminoethyl ester; (meth) acrylamide, dimethyl (meth) acrylamide, N-methylol (Me ) Amide group-containing monomers such as acrylamide, N-methylolpropane (meth) acrylamide, N-vinylacetamide; (meth) acrylic acid methoxyethyl ester, (meth) acrylic acid ethoxyethyl ester, (meth) acrylic acid methoxyethylene Alkoxy group-containing monomers such as glycol ester, (meth) acrylic acid methoxydiethylene glycol ester, (meth) acrylic acid methoxypolyethylene glycol ester, (meth) acrylic acid methoxypolypropylene glycol ester, (meth) acrylic acid tetrahydrofuryl ester, etc. Can be mentioned. Other monomers that can be copolymerized include, for example, (meth) acrylonitrile, vinyl acetate, vinyl propionate, N-vinyl-2-pyrrolidone, methylvinylpyrrolidone, vinylpyridine, vinylpiperidone, vinylpyrimidine, vinylpiperazine. , Vinyl pyrrole, vinyl imidazole, vinyl caprolactam, vinyl oxazole, vinyl morpholine and the like.
[0026]
Moreover, as long as the characteristics of the present invention are not changed, a (meth) acrylic acid alkyl ester having an alkyl group having 1 to 3 carbon atoms or 14 or more carbon atoms may be copolymerized.
[0027]
In the present invention, the acrylic pressure-sensitive adhesive is an alkyl (meth) acrylate because it is particularly excellent in pressure-sensitive pressure-sensitive adhesiveness and cohesiveness as pressure-sensitive adhesive properties and release of a drug contained in the pressure-sensitive pressure-sensitive adhesive layer. A copolymer of ester and (meth) acrylic acid, particularly a copolymer obtained by polymerizing 65 to 99% by weight of (meth) acrylic acid alkyl ester and 1 to 35% by weight of (meth) acrylic acid is preferable.
[0028]
In the present invention, the adhesive polymer (adhesive) constituting the pressure-sensitive adhesive layer is selected according to the purpose of administration of the drug. That is, for the purpose of short-time administration, an adhesive polymer that is excellent in release of the contained drug is selected. It is desirable to select an adhesive polymer rich in.
[0029]
The pressure-sensitive adhesive layer may contain various additives as necessary. Examples of the additive include a plasticizer, an absorption accelerator, an antioxidant, a tackifier, and a filler. The plasticizer can adjust the sticking force to the oral mucosa by plasticizing the pressure-sensitive adhesive layer. Examples of such plasticizers include hydrocarbons such as liquid paraffin, diisopropyl adipate, diacetylseparate, and the like, and one or more of these are used. The absorption accelerator is a compound having a function of enhancing the solubility and diffusibility of the drug in the pressure-sensitive adhesive layer. For example, as a compound mainly enhancing the solubility of the drug, ethylene glycol, diethylene glycol, propylene glycol Examples of compounds that mainly increase drug diffusibility, such as glycols such as triethylene glycol, polyethylene glycol, and polypropylene glycol, include oils and fats such as olive oil, castor oil, squalane, and lanolin. Examples of the antioxidant include ascorbic acid, tocopherol acetate, butylhydroxyanisole, dibutylhydroxytoluene, propyl gallate, and 2-mercaptobenzimidazole. Examples of the tackifier include rosin, modified rosin, petroleum resin, polyterpene resin, polystyrene resin, polybutene resin, and liquid polyisobutylene. Examples of the filler include kaolin, titanium oxide, talc, calcium carbonate, magnesium carbonate, silicate, silicic acid, magnesium aluminate metasilicate, aluminum hydrate, barium sulfate, and calcium sulfate. Other additives include various surfactants, ethoxylated stearyl alcohol, oleic acid monoglyceride, caprylic acid monoglyceride, glycerin monoesters such as lauric acid monoglyceride, or glycerin diester, glycerin triester or a mixture thereof, ethyl laurate , Higher fatty acid esters such as isopropyl myristate, isotridecyl myristate, octyl palmitate, isopropyl palmitate, ethyl oleate and diisopropyl adipate, higher fatty acids such as oleic acid and caprylic acid, N-methylpyrrolidone, 1,3-butane Examples include diols.
[0030]
The method for producing the intraoral patch preparation of the present invention is not particularly limited. For example, a method in which a drug, an adhesive polymer, or the like is dissolved or dispersed in a solvent, and the resulting solution or dispersion is applied to one side of a support and dried to form a pressure-sensitive adhesive layer on one side of the support Etc. Also, the above solution or dispersion is applied onto a protective release liner and dried to form a pressure-sensitive adhesive layer on the release liner, and the pressure-sensitive adhesive layer and support on the release liner It can be manufactured by a method of bonding the body. In this case, it is possible to prevent the pressure-sensitive adhesive layer from unexpectedly contacting and adhering to an instrument, a container or the like during manufacture, transportation or storage. In addition, until the pressure sensitive adhesive layer is covered and protected with a release liner until just before application to the mucous membrane in the oral cavity, the release liner is peeled off when applied to the oral mucosa and the pressure sensitive adhesive layer. Can be adhered and pasted, so that the adhesiveness of the pressure-sensitive adhesive layer and the deterioration of the drug can be prevented.
[0031]
The material of the release liner is not particularly limited as long as it can be easily peeled off from the pressure-sensitive adhesive layer during use. For example, synthetic resin films such as polyester, polyvinyl chloride, polyvinylidene chloride, and polyethylene terephthalate that have been subjected to release treatment by applying silicone resin or fluororesin to the surface that comes into contact with the pressure-sensitive adhesive layer, high-quality paper Paper such as glassine paper, or high-quality paper or glassine paper and a laminate film of a polyolefin film are used. The thickness of the release liner is usually 10 to 200 μm, preferably 50 to 100 μm.
[0032]
The thickness of the pressure sensitive adhesive layer is usually 10 μm to 200 μm, preferably 15 μm to 150 μm.
[0033]
The shape of the intraoral patch preparation of the present invention is not particularly limited as long as it is substantially a shape that can be applied, and examples thereof include a circle, an ellipse, a rectangle, a square, a triangle, a turtle shell, and the like. In particular, an oval shape, a rectangular shape or a square shape is preferable from the viewpoint of manufacturing and use. The size is suitable for application in the oral cavity. For example, in the case of an ellipse, the minor axis is generally 0.5 cm to 2 cm, the major axis is 1 cm to 5 cm, preferably the minor axis is 0.8 cm to The major axis is 1.5 cm and the major axis is 2 cm to 4 cm. In the case of a rectangle, the short side is generally 0.5 cm to 2 cm, the long side is 1 cm to 5 cm, preferably the short side is 0.8 cm to 1.5 cm, and the long side is 2 cm to 4 cm. In the case of a square, one side is generally 0.5 cm to 2 cm, preferably 0.8 cm to 1.5 cm.
[0034]
In the intraoral patch preparation of the present invention, the water elution rate of the drug from the pressure-sensitive adhesive layer non-forming surface of the support when immersed in water at 32 ° C. for 20 minutes is 25% by weight of the total content of the drug Hereinafter, it is preferably 10% by weight or less. If the water elution rate of the drug exceeds 25% by weight, the leakage of the drug due to saliva or the like is likely to occur, so that the patient feels unnecessarily unpleasant due to bitterness and the use efficiency of the drug decreases. There are problems such as insufficient medicinal effects. In the present invention, the “pressure-sensitive adhesive layer non-forming surface of the support” refers to the surface opposite to the pressure-sensitive adhesive layer forming surface of the support and the side surface of the support. The water elution rate is a value measured according to the dissolution test method (paddle method) described in the Japanese Pharmacopoeia.
[0035]
In order to set the water elution rate of the drug within the above range, for example, the form of the fabric (for example, non-woven fabric), material (for example, polyolefin), thickness, mass, type of pressure-sensitive adhesive (for example, acrylic pressure-sensitive adhesive), pressure sensitivity A method such as appropriately selecting the thickness and the like of the pressure-sensitive adhesive layer is employed.
[0036]
The intraoral patch preparation of the present invention preferably has a bending resistance (as determined by the 45 ° cantilever method) of 15 mm to 60 mm as defined in JIS-L1085, in terms of a balance between handleability and usability, and is 20 mm to 50 mm. More preferably. When the bending resistance is small outside this range, the handleability tends to decrease.For example, the sticking operation in the oral cavity that presents a complicated and narrow space arrangement due to the teeth, tongue, etc. does not work. If it is outside this range and is large, it tends to feel a foreign object feeling at the time of application.
[0037]
When the intraoral patch preparation of the present invention is used as an oral patch preparation containing a topical drug, it is mainly applied to the gingival region and immediately exhibits a medicinal effect. When the intraoral patch preparation of the present invention is an oral patch preparation containing a systemic drug, it is affixed to the buccal mucosa, labial mucosa, sublingual, gingival region, etc., and the drug effect lasts for several tens of minutes to several hours. . Furthermore, if the intraoral patch preparation containing the systemic drug of the present invention is applied to the inner lip mucosa or the upper gingival part, the contact with the saliva is less, and it is difficult to peel off because it is pressed by the lips and gums, and it takes a longer time. The medicinal effect is sustained.
[0038]
【Example】
EXAMPLES Hereinafter, although an Example demonstrates this invention concretely, this invention is not limited to these Examples. In addition, in the following description, a part means a weight part and the thickness and mass of a nonwoven fabric are the values measured by the method prescribed | regulated to JIS-L1085.
[0039]
(Preparation of adhesive A solution)
Under an inert gas atmosphere, 95 parts of 2-ethylhexyl acrylate and 5 parts of acrylic acid were copolymerized in ethyl acetate to prepare a pressure-sensitive adhesive A solution.
[0040]
Example 1
60 parts of lidocaine was added to 40 parts (solid content) of the adhesive A solution and mixed and dissolved, and the resulting solution was applied on a polyester film (thickness 75 μm) subjected to a release treatment so that the thickness after drying was about 20 μm. It dried and produced the pressure sensitive adhesive layer. Next, the pressure-sensitive adhesive layer was formed from a stretchable polypropylene nonwoven fabric (thickness 0.6 mm, mass 100 g / m) produced by a spunlace method. 2 ) To prepare an intraoral patch preparation.
[0041]
(Example 2)
60 parts of lidocaine was added to 40 parts (solid content) of the adhesive A solution and mixed and dissolved, and the resulting solution was applied on a polyester film (thickness 75 μm) subjected to a release treatment so that the thickness after drying was about 20 μm. It dried and produced the pressure sensitive adhesive layer. Next, this pressure-sensitive adhesive layer was produced by splitting a split fiber obtained by splitting a composite fiber (polypropylene content: 55% by weight, polyester content: 45% by weight) by a spunlace method. Nonwoven fabric (thickness 0.42 mm, mass 90 g / m 2 ) To prepare an intraoral patch preparation.
[0042]
(Comparative Example 1)
60 parts of lidocaine was added to 40 parts (solid content) of the adhesive A solution and mixed and dissolved, and the resulting solution was applied on a polyester film (thickness 75 μm) subjected to a release treatment so that the thickness after drying was about 20 μm. It dried and produced the pressure sensitive adhesive layer. Next, the pressure-sensitive adhesive layer was formed from a stretchable polyester nonwoven fabric (thickness of about 0.6 mm, mass of 100 g / m) produced by a spunlace method. 2 ) To prepare an intraoral patch preparation.
[0043]
(Comparative Example 2)
60 parts of lidocaine was added to 40 parts (solid content) of the adhesive A solution and mixed and dissolved, and the resulting solution was applied on a polyester film (thickness 75 μm) subjected to a release treatment so that the thickness after drying was about 20 μm. It dried and produced the pressure sensitive adhesive layer. Next, this pressure-sensitive adhesive layer was made of polyester nonwoven fabric (thickness 0.035 mm, mass 12 g / m 2 ) To prepare an intraoral patch preparation.
[0044]
(Comparative Example 3)
60 parts of lidocaine was added to 40 parts (solid content) of the adhesive A solution and mixed and dissolved, and the resulting solution was applied on a polyester film (thickness 75 μm) subjected to a release treatment so that the thickness after drying was about 20 μm. It dried and produced the pressure sensitive adhesive layer. Subsequently, this pressure-sensitive adhesive layer was made of a polypropylene nonwoven fabric (thickness 0.2 mm, mass 18 g / m 2 ) To prepare an intraoral patch preparation.
[0045]
For oral patch preparations obtained in Examples 1 and 2 and Comparative Examples 1, 2 and 3, 1 cm 2 The following performance evaluations (1) and (2) were performed using test pieces cut to a size of (1 cm × 1 cm). The results are shown in Tables 1 and 2.
[0046]
(1) Drug water elution rate
About the said formulation, the water elution rate of the drug was measured according to the dissolution test method (paddle method) described in the Japanese Pharmacopoeia. First, after setting a container (refer FIG. 1) to the elution tester (NTR-VS6P; Toyama Sangyo Co., Ltd.), 500 mL of water was put into this container as an eluent. Next, after setting the dissolution tester to 32 ° C. and making it constant temperature, the test piece from which the polyester film was peeled was placed on a stainless steel plate having a diameter of 41.2 mm and a thickness of 3.3 mm. The pressure-sensitive adhesive layer was fixed downward with a double-sided tape (No. 500; manufactured by Nitto Denko Corporation) and immersed in water in a container. Next, a paddle (see FIG. 2) was placed in the container, and the eluate was stirred by rotating at 25 rpm, and after 20 minutes, 5 mL of the eluate was collected from the container. The elution amount of the drug in the collected eluate was measured by liquid chromatography, and the elution rate relative to the initial drug content was calculated.
[0047]
[Table 1]
Figure 0004459414
[0048]
(2) Drug leakage due to saliva
The test piece from which the polyester film was peeled off was attached to the inner side of the upper gingival part, which was lightly wiped off with water absorbent cotton in advance by five volunteers, and scored in the following manner for bitterness and pharmacological effect during use.
[0049]
(Bitterness during use)
The support of the test piece of the preparation was licked with the tip of the tongue wetted with saliva for up to 3 minutes every 30 seconds after application, and the bitterness due to the drug was evaluated in the following score stages.
0 points: Bitterness was felt within 1 minute of application
1 point: I felt bitterness within 3 minutes after 1 minute
2 points: No bitterness was felt even 3 minutes after application.
[0050]
(Pharmacological effect)
The test piece of the preparation was peeled off 3 minutes after application, the application site was stimulated with an injection needle, and the anesthetic effect was evaluated in the following score stages.
0 points: I felt pain
1 point: I felt a slight pain
2 points: I did not feel pain.
[0051]
[Table 2]
Figure 0004459414
[0052]
From Tables 1 and 2, the preparations of Examples 1 and 2 have a low drug elution rate, so that there is almost no leakage of the drug due to saliva, so that bitterness is hardly felt and the pharmacological effect is sufficient. I understand that. On the other hand, since the non-woven fabric of the preparation of Comparative Example 1 was made of polyester, the preparation of Comparative Example 2 had a small thickness and mass of the non-woven fabric, and the formulation of Comparative Example 3 had a small mass of non-woven fabric. Therefore, the drug leaked and washed away by saliva, and therefore, bitter taste was felt and the pharmacological effect was not sufficient.
[0053]
【The invention's effect】
According to the present invention, an intraoral patch preparation comprising a support made of a fabric and a pressure-sensitive adhesive layer containing a drug formed on one side of the support can be obtained. In the intraoral patch preparation of the present invention, the water elution rate of the drug from the other side and the side surface of the support when immersed in water at 32 ° C. for 20 minutes is 25% by weight of the total content of the drug Therefore, it is difficult for the drug to leak out due to saliva and the like, and therefore the patient rarely feels an unpleasant bitterness and the use efficiency of the drug does not decrease.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a container used for measuring the water elution rate of a drug in the present invention.
FIGS. 2A and 2B are diagrams showing a paddle used for measuring a water elution rate of a drug in the present invention, wherein FIG. 2A is a front view and FIG. 2B is a side view.
[Explanation of symbols]
1 container
2 paddle
3 Rotating shaft
4 Stirring blade

Claims (4)

布帛からなる支持体と、当該支持体の片面に形成された薬物を含有する感圧性粘着剤層とを含んでなる口腔内貼付製剤であって、当該布帛が不織布であり、当該不織布がスパンレース法により製造されたものであり、かつ当該不織布がポリオレフィン繊維を主体としてなるものであり、32℃の水中に20分間浸漬したときの、当該支持体の感圧性粘着剤層非形成面からの当該薬物の水溶出率が、当該薬物の全含有量の25重量%以下である、口腔内貼付製剤。An intraoral patch preparation comprising a support made of a fabric and a pressure-sensitive adhesive layer containing a drug formed on one side of the support, wherein the fabric is a non-woven fabric, and the non-woven fabric is a spunlace And the nonwoven fabric is mainly composed of polyolefin fibers, and when immersed in water at 32 ° C. for 20 minutes, the support from the pressure-sensitive adhesive layer non-forming surface of the support is used. An intraoral patch preparation in which the water dissolution rate of a drug is 25% by weight or less of the total content of the drug. 布帛の質量が20〜150g/mである、請求項1記載の口腔内貼付製剤。Fabric weight is 20 to 150 g / m 2, intraoral adhesive preparation of claim 1, wherein. 布帛の厚みが0.1〜1.0mmである、請求項1または2記載の口腔内貼付製剤。  The intraoral patch preparation according to claim 1 or 2, wherein the fabric has a thickness of 0.1 to 1.0 mm. 薬物が局所麻酔薬である、請求項1〜のいずれかに記載の口腔内貼付製剤。The intraoral patch preparation according to any one of claims 1 to 3 , wherein the drug is a local anesthetic.
JP2000254434A 2000-08-24 2000-08-24 Oral patch preparation Expired - Fee Related JP4459414B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2000254434A JP4459414B2 (en) 2000-08-24 2000-08-24 Oral patch preparation
US09/935,437 US6387392B1 (en) 2000-08-24 2001-08-23 Intraoral adhesive preparation
CA002355584A CA2355584C (en) 2000-08-24 2001-08-23 Intraoral adhesive preparation
TW090120844A TWI222368B (en) 2000-08-24 2001-08-24 Intraoral adhesive preparation
KR1020010051291A KR100759656B1 (en) 2000-08-24 2001-08-24 Intraoral adhesive preparation
EP01120336A EP1181931A3 (en) 2000-08-24 2001-08-24 Intraoral adhesive preparation

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JP2000254434A JP4459414B2 (en) 2000-08-24 2000-08-24 Oral patch preparation

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TWI222368B (en) 2004-10-21
JP2002068967A (en) 2002-03-08
KR100759656B1 (en) 2007-09-17
KR20020016576A (en) 2002-03-04
EP1181931A2 (en) 2002-02-27
US20020051753A1 (en) 2002-05-02
CA2355584A1 (en) 2002-02-24
US6387392B1 (en) 2002-05-14
CA2355584C (en) 2010-01-05
EP1181931A3 (en) 2003-01-15

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